An Overview of Thermally Sprayed Fe-Cr-Nb-B Metallic Glass Coatings: From the Alloy Development to the Coating’s Performance Against Corrosion and Wear

Development of Fe-based glass former alloys for thermal spray coatings with optimized corrosion and wear properties

“…Also, recent reviews of Fe-based glassy coatings have been published [75][76][77] and the number of publications and citations have grown remarkably, reaching over 4,000 cumulative citations for specific Fe-based thermally sprayed metallic glass coating. Indeed, the topic is also present in patents, as indicated in recent studies that demonstrate the applied potential of Fe-based metallic glass alloys [78] and coatings [79].…”

Newly-developed pseudo-high entropy amorphous alloys: Structure/microstructure evolution, mechanical and corrosion properties.

“…The devitrification of conventional Fe-based amorphous alloys [26,29,42,51] leads to crystalline phase precipitation, an amorphous phase percentage reduction, interfaces, and grain boundary creation, with the increasing annealing temperature. These phenomena are associated, among others, with the depletion of protective elements in the matrix, such as Cr and Mo, which form precipitates and become less available for passive film formation [25,27,42].…”

“…Concerning coating processing, efforts continue to be made to form Fe-based metallic glass coatings by using different deposition techniques such as high-velocity oxy-fuel (HVOF) [46], low-velocity oxygen fuel alloy (LVOF) [17], plasma [47,48], and detonation spraying [49], as well as by laser cladding [50]. Each technique can result in different cooling rates delivering different microstructures that are not neces-sarily amorphous [51]. Indeed, none of them [17,46,[48][49][50] resulted in a completely amorphous structure.…”